JP6700659B2 - Antenna device - Google Patents

Description

  The present invention relates to an antenna device attached to a roof of a vehicle or the like.

  In recent years, a vehicle-mounted antenna device called a shark fin antenna has been developed (Patent Document 1 below). In addition to the basic function as an antenna, a shark fin antenna having a light emitting function is also known (Patent Document 2 below).

JP 2010-21856 JP JP 2014-80094

  The conventional shark fin antenna is designed so that all of the mounted functions are realized in the design case including waterproofing, and the design case has two functions of designing and waterproofing. Therefore, in the case of adding a function as in Patent Document 2, it is necessary to redesign the entire antenna device including the design case and the base, including the waterproof structure, which is complicated.

  The present invention has been made in view of such a situation, and an object thereof is to provide an antenna device that does not require a design change over the whole even if the presence or absence of an additional function is changed.

  Of the present inventionFirstThe aspect is an antenna device. This antenna device
  Antenna base,
  A case fixed to the antenna base,
  A first watertight sealing material that seals between the antenna base and the case in a watertight manner;
  An antenna substrate arranged in a space between the antenna base and the case,
  An antenna element electrically connected to the antenna substrate,
  The case has at least one opening,
  The opening allows the space between the antenna base and the case and the outside of the case to communicate with each other,
  An additional unit attached to the opening,
  The additional unit guides lightIn departmentis there.
A second aspect of the present invention is an antenna device. This antenna device
Antenna base,
A case fixed to the antenna base,
A first watertight sealing material that seals between the antenna base and the case in a watertight manner;
An antenna substrate arranged in a space between the antenna base and the case,
An antenna element electrically connected to the antenna substrate,
The case has at least one opening,
The opening is a space between the antenna base and the case, and the outside of the case. , Communicate with each other,
An additional unit attached to the opening,
The additional unit is a camera,
The case is an inner case,
An outer case is provided so as to cover the case.

  The opening may be watertightly closed.
  In the first aspect,The case is an inner case,
  An outer case may be provided so as to cover the case.
In this case, a light emitting module is provided, and the light emitting module includes a light emitting element, The light guide unit may be configured to guide the light emitted from the light emitting element to the light transmitting unit of the outer case.
  The opening may be an opening for adding a function.

A second watertight sealing material that seals between the additional unit and the opening in a watertight manner may be provided.
In the first aspect, the additional unit may be a camera.

In the first aspect,A light emitting module is provided, and the light emitting module emits light emitted by the light emitting element and the light emitting element.The aboveIt may include the above-mentioned light guide part which leads to the light transmission part of an exterior case. In the second aspect, the additional unit may be a light guide unit.
In a second aspect, a light emitting module is provided, and the light emitting module includes a light emitting element, The light guide unit may be configured to guide the light emitted from the light emitting element to the light transmitting unit of the outer case.

  The light emitting module may have a power supply terminal portion electrically connected to the antenna substrate.

A waterproof plug attached to the opening portion, may be provided and an additional unit including a cable extending from the outside to the inside of the front listen over scan through said waterproof plug.

  A plurality of the openings may be provided.

  It should be noted that any combination of the above constituent elements and one obtained by converting the expression of the present invention between methods and systems are also effective as an aspect of the present invention.

  According to the present invention, it is possible to provide an antenna device that does not require a design change over the whole even if the presence or absence of an additional function is changed.

FIG. 3 is an exploded perspective view of the antenna device according to the first embodiment of the present invention. The disassembled perspective view of the said antenna device seen from the direction different from FIG. FIG. 4 is an explanatory diagram of how the waterproof cover 4 is attached to the first function-adding opening 6d of the inner case 6 in the antenna device. The perspective view of the state where the waterproof lid 4 is attached to the first function-adding opening 6d of the inner case 6 (a perspective view of the antenna device in which the outer case 1 and the gap filling pad 2 are not shown). FIG. 3 is a side sectional view of the antenna device. The front enlarged view of FIG. The rear enlarged view of FIG. AA sectional drawing of FIG. The 1st exploded perspective view of the antenna device concerning Embodiment 2 of the present invention. FIG. 3 is a second exploded perspective view of the antenna device. FIG. 3 is an exploded perspective view of the light emitting module 18 and the waterproof packing 5 in the antenna device. FIG. 3 is a perspective view of a combination of the light emitting module 18 and the waterproof packing 5 with the light guide 19 and the waterproof packing 5 cut in half. FIG. 3 is a side sectional view of the antenna device. Explanatory drawing of the propagation of the light which passes through the light guide 19. The 1st disassembled perspective view of the antenna device which concerns on Embodiment 3 of this invention. FIG. 3 is a second exploded perspective view of the antenna device. The bottom sectional view of light emitting module 25 of the above-mentioned antenna device. Explanatory drawing of the propagation of the light which passes through the light guide 26 in the said antenna device. The 1st disassembled perspective view of the antenna device which concerns on Embodiment 4 of this invention. FIG. 20 is a first exploded perspective view of the antenna device viewed from a direction different from FIG. 19. FIG. 3 is a second exploded perspective view of the antenna device. FIG. 22 is a second exploded perspective view of the antenna device viewed from a direction different from FIG. 21. FIG. 3 is a side sectional view of the antenna device.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Note that the same or equivalent constituent elements, members, and the like shown in each drawing are denoted by the same reference numerals, and duplicated description will be omitted as appropriate. In addition, the embodiments do not limit the invention, but are exemplifications, and all features and combinations described in the embodiments are not necessarily essential to the invention.

Embodiment 1
FIG. 1 is an exploded perspective view of the antenna device according to the first embodiment of the present invention. FIG. 2 is an exploded perspective view of the antenna device viewed from a direction different from that in FIG. FIG. 3 is an explanatory diagram of how the waterproof cover 4 is attached to the first function-adding opening 6d of the inner case 6 in the antenna device. FIG. 4 is a perspective view of a state where the waterproof lid 4 is attached to the first function-adding opening 6d of the inner case 6 (a perspective view of the antenna device in which the outer case 1 and the gap filling pad 2 are omitted). is there. FIG. 5 is a side sectional view of the antenna device. FIG. 6 is an enlarged front view of FIG. FIG. 7 is a rear enlarged view of FIG. FIG. 8 is a sectional view taken along line AA of FIG.

  The antenna device according to the present embodiment is mounted on a vehicle and is attached to the roof or the like of the vehicle. The outer case 1 is made of a radio wave permeable synthetic resin (molded product made of a resin such as PC or PET) and has a shark fin shape in which both side surfaces are curved inward. As shown in FIG. 5, the outer case 1 has a predetermined number of locking claws 1 a for attachment to the antenna base 10. The gap filling pad 2 is an annular elastic member made of elastomer, rubber, or the like, and is fitted into the inner peripheral edge of the lower end of the outer case 1 as shown in FIG. It functions as a blindfold for the gap.

  The capacitive element 3, which is an example of the antenna element, is a metal plate (conductor plate) such as stainless steel and has a planar portion 3a having an umbrella shape, a U-shape, a U-shape, or a V-shape, for example. It is bent by drawing. The capacitive element 3 has a predetermined number of locking holes 3b for locking the inner case 6, and a screwing through hole 3c for inserting a screw 3d for fixing to the inner case 6.

  The inner case 6 is made of a radio wave permeable synthetic resin (molded product made of a resin such as ABS resin), and supports the capacitive element 3 on a capacitive element support portion 6a having a shape along the planar portion 3a of the capacitive element 3. Further, as shown in FIG. 5, a coil element 13, which is an example of an antenna element, is supported inside. The capacitive element 3 and the coil element 13 enable reception of AM/FM broadcasting. The inner case 6 has a predetermined number of locking projections 6b for locking the capacitive element 3 by engaging with the locking holes 3b of the capacitive element 3. The inner case 6 is provided with a conductor pipe (metal pipe) 6c for electrically connecting the capacitive element 3 and the coil element 13 by insert molding or press fitting. A female screw is formed on the inner peripheral surface of the conductor pipe 6c. The screw 3d made of a conductive material penetrates the screwing through hole 3c of the capacitive element 3 and is screwed into the conductor pipe 6c from above to fix the capacitive element 3 to the inner case 6. The waterproof packing 6i (FIG. 5) is an annular elastic member such as elastomer or rubber, and seals the joint between the capacitive element 3 and the inner case 6 in a watertight manner. The screw 13c made of a conductive material penetrates the upper terminal 13a of the coil element 13 and is screwed into the conductor pipe 6c from below to fix the upper terminal 13a to the inner case 6. As a result, the upper terminal 13a of the coil element 13, the conductor pipe 6c, and the capacitive element 3 are electrically connected to each other.

  The inner case 6 has a first function-adding opening 6d, a pair of locking holes 6e, and guide protrusions 6f and 6g. Although an additional unit such as a light emitting module can be attached to the first function addition opening 6d, since the present embodiment does not add a function, the waterproof lid 4 is attached to the first function addition opening 6d. Install. The waterproof lid 4 is made of a radio-transmissive synthetic resin (molded product made of resin such as PC or PET), and has a pair of snap fits 4a for attachment to the first function addition opening 6d and a first. Guide recesses 4b and 4c which serve as guides when the function addition opening 6d is attached. The pair of locking holes 6e of the inner case 6 are respectively provided on the left and right sides of the first function adding opening 6d, and engage the pair of snap fits 4a of the waterproof lid 4 to lock the waterproof lid 4. .. The guide protrusions 6f and 6g of the inner case 6 engage with the guide recesses 4b and 4c of the waterproof lid 4, function as guides when the waterproof lid 4 is attached, and prevent rattling of the waterproof lid 4. .. The waterproof packing 5, which is an example of the second watertight sealing material, is an annular elastic member formed of elastomer, rubber, or the like, and is located on the step 6j on the inner surface of the first function addition opening 6d. Is pressed against the outer side surface of the portion of the waterproof lid 4 that has entered the opening 6d and the inner side surface of the first function-adding opening 6d, and between the waterproof lid 4 and the first function-adding opening 6d. Watertight seal. That is, the waterproof lid 4 and the waterproof packing 5 seal the first function adding opening 6d in a watertight manner.

  The inner case 6 has a second function addition opening 6h (FIG. 2). A waterproof plug (waterproof grommet) 7 is attached to the second function adding opening 6h. The waterproof plug 7 has a recess 7a that fits into the second function adding opening 6h on the outer peripheral surface, and seals the second function adding opening 6h in a watertight manner. When an additional unit such as a camera module is provided, the waterproof plug 7 can penetrate the cable of the additional unit by breaking the thin portion 7b. This will be described in another embodiment (FIGS. 19 to 23). The waterproof plug 7 has a handle portion 7c (FIG. 5), and is attached to the second function addition opening 6h by pulling the handle portion 7c from the inside of the inner case 6.

  The waterproof pad 8 as the first watertight sealing material is an annular elastic member such as elastomer or rubber, and is provided on the antenna base 10. As shown in FIG. 5, the waterproof pad 8 is pressed over the entire circumference by the lower end portion of the inner case 6 which is fixed to the antenna base 10 with screws or the like, so that the water between the antenna base 10 and the inner case 6 can be prevented. Tightly seal. As described above, the first function-adding opening 6d and the second function-adding opening 6h of the inner case 6 are watertightly sealed, and the seal member 15 is provided between the antenna base 10 and the vehicle body as described later. Since it is water-tightly sealed, a water-tight space is formed between the antenna base 10 and the inner case 6.

  The antenna substrate 9 is fixed on the antenna base 10 by screws or the like, and is located in the space between the antenna base 10 and the inner case 6. On the antenna substrate 9, a pair of conductor leaf springs (terminals) 9a sandwiching the lower terminal 13b of the coil element 13 and a pair of additional function electrodes 9b are provided. When the additional unit is attached to the first function adding opening 6d, the additional function electrode 9b can be used for electrical connection with the terminal portion of the additional unit. This will be described in another embodiment (FIGS. 9 to 14).

  The antenna base 10 is, for example, a combination body (composite body) of a metal base such as aluminum and a resin base such as PBT. The antenna base 10 has a predetermined number of locking claws 10a that engage with the locking claws 1a of the outer case 1 and lock the outer case 1 on the outer peripheral portion. As shown in FIG. 5, the cable 14 connected to the antenna substrate 9 extends below the antenna base 10 through the opening of the antenna base 10. The vehicle body mounting screw 11 is screwed onto the antenna base 10 via the washer 12 shown in FIG. 5 to fix the present antenna device to the roof of the vehicle or the like. A seal member 15 made of an annular elastic member such as elastomer or rubber is provided on the lower surface of the antenna base 10. The seal member 15 provides a watertight seal between the antenna base 10 and the vehicle body.

  A flow of assembling the antenna device according to the present embodiment will be described. First, the waterproof lid 4 is attached to the first function-adding opening 6d of the inner case 6 with the waterproof packing 5 interposed therebetween. At this time, the pair of snap fits 4a of the waterproof lid 4 are engaged with the pair of locking holes 6e provided on both sides of the first function addition opening 6d. Further, the waterproof plug 7 is attached to the second function addition opening 6h of the inner case 6. Further, the capacitive element 3 is arranged on the capacitive element supporting portion 6a of the inner case 6, the locking hole 3b of the capacitive element 3 and the locking convex portion 6b of the inner case 6 are engaged, and the screw 3d is screwed. The capacitive element 3 is fixed to the inner case 6 by being screwed into the conductor pipe 6c from above through the through hole 3c. The upper terminal 13a of the coil element 13 is fixed to the inner case 6 by screwing the screw 13c into the conductor pipe 6c from below. The above procedure may be performed in any order.

  On the other hand, on the antenna base 10, the antenna substrate 9 is fixed by screws and the waterproof pad 8 is arranged. Then, the inner case 6 is set on the antenna base 10 so that the lower terminal 13b of the coil element 13 is sandwiched between the pair of conductor leaf springs 9a of the antenna substrate 9, and the inner case 6 is fixed to the antenna base 10 by screwing or the like. To do. At this time, the lower end of the inner case 6 presses the waterproof pad 8 over the entire circumference. Finally, the outer case 1 having the gap filling pad 2 fitted therein is attached to the antenna base 10. At this time, the locking claw 1a of the outer case 1 and the locking claw 10a of the antenna base 10 are engaged with each other. The antenna device thus assembled is attached to the roof or the like of the vehicle with the seal member 15 sandwiched between the vehicle body mounting screw 11 and the washer 12 shown in FIG.

  According to this embodiment, the following effects can be obtained.

(1) Since the watertight space is formed between the inner case 6 and the antenna base 10 and the antenna substrate 9 is arranged, the outer case 1 can be freely designed without being restricted by the waterproof structure. Therefore, when changing the design, only the outer case 1 can be changed in design and the other parts can be made common, and the labor and cost required for changing the design can be reduced.

(2) Since the inner case 6 is provided with the first function-adding opening 6d and an additional unit such as a light emitting module can be attached instead of the waterproof lid 4, the design of the inner case 6 and the antenna base 10 is not changed. The presence or absence of additional units can be changed. That is, even if the presence or absence of additional units (additional functions) is changed, the inner case 6 and the antenna base 10 are common, and there is no need to change the overall design. The labor and cost can be reduced. The inner case 6 or the antenna base 10 may be slightly changed in design depending on the presence or absence of the additional unit. However, since most of them may be common, the labor and cost of design can be reduced even in such a case.

(3) The inner case 6 is provided with a second function-adding opening 6h so that a cable of an additional unit such as a camera module can be passed through the waterproof plug 7 that watertightly closes the second function-adding opening 6h. Therefore, the design labor and cost can be reduced as in the case where the first function adding opening 6d is provided.

Embodiment 2
FIG. 9 is a first exploded perspective view of the antenna device according to the second embodiment of the present invention. FIG. 10 is a second exploded perspective view of the antenna device. The gap filling pad 2 is not shown in FIGS. 9 and 10. FIG. 11 is an exploded perspective view of the light emitting module 18 and the waterproof packing 5 in the antenna device. FIG. 12 is a perspective view of a combination of the light emitting module 18 and the waterproof packing 5 with the light guide 19 and the waterproof packing 5 cut in half. FIG. 13 is a side sectional view of the antenna device. FIG. 14 is an explanatory diagram of light propagation through the light guide 19.

  The antenna device of the present embodiment is different from that of the first embodiment shown in FIG. 1 etc. in that the outer case 1 is replaced with an outer case 1A in which a light blocking body 16 and a light transmitting body 17 are combined, and a waterproof lid is used. 4 is different from the light emitting module 18 as an additional unit, and is the same in other points. The configurations of the capacitive element 3, the inner case 6, the waterproof pad 8, the antenna substrate 9, the antenna base 10, and the coil element 13 (hereinafter also referred to as “inner case set”) and their assembly are common to the first embodiment. The description is omitted here. Further, the waterproof plug 7 has the same configuration as that of the first embodiment, and is similarly attached to the second function addition opening 6h of the inner case 6.

  The light shield 16 of the outer case 1A has an opening 16a in the top surface thereof, and the light transmitter 17 as a light transmitting portion is attached and fixed to the opening 16a by fitting or bonding. The light blocking body 16 and the light transmitting body 17 are made of a radio wave transmitting synthetic resin (molded product made of a resin such as PC or PET), and have a shark fin shape in which both side surfaces are curved inward when combined with each other. To make. The light blocking body 16 does not transmit light, while the light transmitting body 17 transmits light. Similar to the outer case 1 of the first embodiment, the light blocking body 16 is attached (locked) to the antenna base 10 by engaging the locking claws with the gap filling pad 2 (FIG. 1) fitted. ).

  The light emitting module 18 is a combination of a light guide 19 as a light guide and a light emitting unit 20. The light guide 19 is made of a synthetic resin (a molded product made of a resin such as PC) having a high refractive index and radio wave transmission, and includes a mounting base portion 19a and a light guide path forming portion 19b. The mounting base portion 19a has the same structure as the waterproof lid 4 shown in FIG. 1 with respect to the mounting structure of the inner case 6 to the first function addition opening 6d. A watertight seal is provided between the mounting base portion 19a and the first function addition opening 6d by a waterproof packing 5. The light guide path forming portion 19b is located inside the light transmitting body 17 from the mounting base portion 19a so as to extend along the surface portion 3a of the capacitive element 3, that is, between the surface portions 3a and the light transmitting body 17 facing each other. Extend. A predetermined number of V-shaped grooves (diffuse reflection patterns) 19c are provided on the surface of the light guide forming portion 19b on the side of the capacitive element 3. In the grooves 19c, the distance between the adjacent grooves is increased with increasing distance from the LED 20a (toward the rear end side).

  The light emitting unit 20 includes an LED 20a as a light emitting element, a power feeding terminal portion 20b (FIGS. 11 and 12), and a support body 20c that supports the LED 20a and the power feeding terminal portion 20b. The support 20c is made of a radio wave permeable synthetic resin (molded product made of resin such as PC or PET), and is attached and fixed to the light guide 19 by press fitting or the like. The support 20c contains a constant current circuit for driving the LED 20a and a circuit for providing electrostatic withstand voltage. The LED 20a is supported by the upper end of the support 20c and emits light obliquely upward and rearward. The power supply terminal portion 20b is supported by the lower end portion of the support body 20c, and contacts the electrode 9b for additional function (FIGS. 1 and 2) of the antenna substrate 9 to be electrically connected thereto.

  As shown in FIG. 14, the light emitted from the LED 20a propagates in the light guide path forming portion 19b while repeating total reflection, and is reflected by the groove 19c provided on the surface of the light guide path forming portion 19b on the side of the capacitive element 3. Then, the light is incident on the surface of the light guide forming portion 19b on the side of the light transmitter 17 at a steep angle that exceeds the angle of total reflection, and jumps out to the side of the light transmitter 17. Therefore, the surface of the light guide forming portion 19b appears to emit light. Further, the light that has jumped out from the light guide path forming portion 19b toward the capacitive element 3 is reflected by the capacitive element 3 and returns to the light guide path forming portion 19b, and finally jumps out toward the light transmissive body 17 side. 19b can be efficiently brightened.

  According to the present embodiment, an antenna device having a light emitting function can be realized by using the same inner case set as that of the antenna device of the first embodiment having no light emitting function.

Embodiment 3
FIG. 15 is a first exploded perspective view of the antenna device according to the third embodiment of the present invention. FIG. 16 is a second exploded perspective view of the antenna device. 15 and 16, the illustration of the gap filling pad 2 is omitted. FIG. 17 is a bottom cross-sectional view of the light emitting module 25 of the antenna device. FIG. 18 is an explanatory diagram of light propagation through the light guide 26 in the antenna device.

  In the antenna device of the present embodiment, the outer case 1 is replaced by an outer case 1B in which a light blocking body 23 and a pair of light transmitting bodies 24 are combined, as compared with the first embodiment shown in FIG. The difference is that the waterproof lid 4 is replaced with a light emitting module 25 as an additional unit, and the other points are the same. The structure of the inner case group and their assembly are the same as those in the first embodiment, and the description thereof is omitted here. Further, the waterproof plug 7 has the same configuration as that of the first embodiment, and is similarly attached to the second function addition opening 6h of the inner case 6. In the second embodiment, the top surface of the outer case is made to emit light, whereas in the present embodiment, part of both side surfaces of the outer case is made to emit light.

  The light blocking body 23 of the outer case 1B has openings 23a on both side surfaces (only one opening 23a appears in the figure), and the light transmitting body 24 as a light transmitting portion does not fit into the opening 23a. It is attached and fixed by adhesion or the like. The light blocking body 23 and the light transmitting body 24 are made of a radio wave transmitting synthetic resin (molded product made of a resin such as PC or PET), and have a shark fin shape in which both side surfaces are curved inward when combined with each other. To make. The light blocking body 23 does not transmit light, while the light transmitting body 24 transmits light. Similar to the outer case 1 of the first embodiment, the light blocking body 23 is attached (locked) to the antenna base 10 by engaging the locking claws with the gap filling pad 2 (FIG. 1) fitted. ).

  The light emitting module 25 is a combination of a light guide 26 and a light emitting unit 27. The light guide body 26 is made of a synthetic resin having high refractive index and radio wave transmission (a molded product made of resin such as PC), and includes a mounting base portion 26a and a pair of light guide path forming portions 26b. The mounting base portion 26a has the same structure as the waterproof lid 4 shown in FIG. 1 with respect to the mounting structure of the inner case 6 to the first function addition opening 6d. A watertight seal is provided between the mounting base portion 26a and the first function addition opening 6d by a waterproof packing 5. The pair of light guide path forming portions 26b are arranged inside the light transmissive body 24, that is, as a planar portion so as to extend along the planar portion 3a of the capacitive element 3 and both side surfaces of the inner case 6 from the upper left and right of the mounting base portion 26a. It extends between the mutually opposing surfaces of 3a and the light transmitting body 24.

  The light emitting unit 27 includes an LED 27a as a light emitting element, a power supply terminal portion (not shown) (similar to the power supply terminal portion 20b in FIGS. 11 and 12), and a support 27c that supports the LED 27a and the power supply terminal portion. The support 27c is made of a radio wave permeable synthetic resin (molded product made of resin such as PC or PET), and is attached and fixed to the light guide 26 by press fitting or the like. The LED 27a is supported by the upper end portion of the support body 27c and emits light obliquely rearward and outward. The power supply terminal portion is supported by the lower end portion of the support body 27c, contacts the electrode 9b for additional function (FIGS. 1 and 2) of the antenna substrate 9, and is electrically connected thereto.

  As shown in FIG. 18, the light emitted from the LED 27a propagates in the light guide forming portion 26b while repeating total reflection, and in the course of the propagation, is sequentially ejected to the light transmissive body 24 side as in the second embodiment. Therefore, the surface of the light guide forming portion 26b appears to emit light. According to the present embodiment, an antenna device having a light emitting function can be realized by using the same inner case set as that of the antenna device of the first embodiment having no light emitting function.

Embodiment 4
FIG. 19 is a first exploded perspective view of the antenna device according to the fourth embodiment of the present invention. 20 is a first exploded perspective view of the antenna device viewed from a direction different from that in FIG. FIG. 21 is a second exploded perspective view of the antenna device. FIG. 22 is a second exploded perspective view of the antenna device viewed from a direction different from that of FIG. FIG. 23 is a side sectional view of the antenna device.

  The antenna device of the present embodiment is different from that of the first embodiment shown in FIG. 1 and the like in that the outer case 1 is replaced with an outer case 28, and a back surface portion 6k is added to the inner case 6 to serve as an additional unit. The camera module 29 and the bracket 30 for mounting the same are added, and the cable 29c of the camera module 29 is different in that it penetrates the waterproof plug 7, and is the same in other points. The configuration of the inner case set and the assembly thereof are the same as those of the first embodiment except that the back surface portion 6k is added to the inner case 6, and the description thereof is omitted here. Further, the waterproof lid 4 has the same configuration as that of the first embodiment, and is similarly attached to the first function addition opening 6d of the inner case 6.

  The outer case 28 is the same as the outer case 1 of the first embodiment except that it has a notch 28a on the back surface. A pair of screw holes 6m are provided in the back surface portion 6k of the inner case 6. The bracket 30 is attached and fixed to the inner case 6 by a pair of screws 30a penetrating the bracket 30 and screwed into the screw holes 6m. The camera module 29 can be used as a drive record, a back view monitor, a rearview mirror, or the like. The camera module 29 is fixed to the inner case 6 by the support of the bracket 30. The camera module 29 includes a photographing lens 29a, a housing 29b supporting the same, and a cable 29c drawn from the housing 29b. The cable 29c pierces the thin portion 7b (FIG. 7) of the waterproof plug 7 and penetrates the waterproof plug 7 attached to the second function addition opening 6h, extends from the outer side of the inner case 6 to the inner side, and It is pulled out below the antenna base 10 through the opening of the antenna base 10 together with the cable 14 connected to the cable 9. At the time of assembly, the waterproof plug 7 may be attached to the second function addition opening 6h by pulling the handle portion 7c of the waterproof plug 7 through which the cable 29c penetrates from the inside of the inner case 6.

  According to the present embodiment, an antenna having a light emitting function is provided by using the same inner case set as that of the antenna device of the first embodiment having no camera function, except that the back surface portion 6k is added to the inner case 6. The device can be realized. The inner case 6 may be the same regardless of the presence or absence of the camera function by providing the back surface portion 6k on the inner case 6 regardless of the presence or absence of the camera function. Further, in the present embodiment, a light emitting module may be added as in the second or third embodiment (the additional unit may be attached to the first function addition opening 6d).

  Although the present invention has been described with the embodiment as an example, it will be understood by those skilled in the art that various modifications can be made to each component and each process of the embodiment within the scope of the claims. By the way. Hereinafter, modified examples will be described.

  In the second and third embodiments, the entire outer case may be configured to transmit light. An antenna unit for another frequency band such as GPS or XM may be added to the first function adding opening 6d. The number of function addition openings may be one or three or more. The waterproof plug 7 attached to the second function addition opening 6h may have different shapes from each other in Embodiment 1 and Embodiment 4 (the cable of the additional unit is passed through the second function addition opening 6h). The shape may be different depending on whether or not).

1, 1A, 1B Outer case, 1a Locking claw, 2 Gap pad, 3 Capacitive element, 3a Planar part, 3b Locking hole, 3c Screw through hole, 3d screw, 4 Waterproof lid, 4a Snap fit, 4b, 4c guide recess, 5 waterproof packing (second watertight sealing material), 6 inner case, 6a capacitive element support, 6b locking projection, 6c conductor pipe (metal pipe), 6d first function addition Opening, 6e locking hole, 6f, 6g guide projection, 6h second function addition opening, 6i waterproof packing, 6j step, 6k rear surface, 6m screw hole, 7 waterproof plug (waterproof grommet), 7a concave part, 7b thin part, 8 waterproof pad (first watertight sealing material), 9 antenna substrate, 9a conductor leaf spring (terminal), 9b electrode for additional function, 10 antenna base, 10a locking claw, 11 body mounting Screw, 12 washer, 13 coil element, 13a upper terminal, 13b lower terminal, 13c screw, 14 cable, 15 sealing member, 16 light blocking body, 16a opening, 17 light transmitting body, 18 light emitting module, 19 light guiding body , 19a mounting base part, 19b light guide forming part, 19c groove (diffuse reflection pattern), 20 light emitting unit, 20a LED (light emitting element), 20b power supply terminal part, 20c support, 23 light blocker, 23a opening, 24 Light transmissive body, 25 light emitting module, 26 light guide, 26a mounting base portion, 26b light guide forming portion, 27 light emitting unit, 27a LED (light emitting element), 27c support, 28 outer case, 28a cutout, 29 camera module, 29a Photographic lens, 29b Housing, 29c Cable, 30 Bracket, 30a Screw

Claims (14)

Antenna base,
A case fixed to the antenna base,
A first watertight sealant for watertightly sealing between the antenna base and the case;
An antenna substrate arranged in a space between the antenna base and the case,
An antenna element electrically connected to the antenna substrate,
The case has at least one opening,
The opening allows the space between the antenna base and the case and the outside of the case to communicate with each other,
An additional unit attached to the opening,
An antenna device in which the additional unit is a light guide.   Antenna base,
  A case fixed to the antenna base,
  A first watertight sealant for watertightly sealing between the antenna base and the case;
  An antenna substrate arranged in a space between the antenna base and the case,
  An antenna element electrically connected to the antenna substrate,
  The case has at least one opening,
  The opening is a space between the antenna base and the case, and the outside of the case. , Communicate with each other,
  An additional unit attached to the opening,
  The additional unit is a camera,
  The case is an inner case,
  An antenna device comprising an outer case provided so as to cover the case. The opening are closed watertight, the antenna device according to claim 1 or 2. The case is an inner case,
The antenna device according to claim 1, further comprising an outer case provided so as to cover the case. The opening is an opening for function addition, the antenna device according to any one of claims 1 to 4. The additional unit and comprising a second water-tight sealing member for watertight seal between said openings, the antenna device according to any one of claims 1 to 5.   The antenna device according to claim 1, wherein the additional unit is a camera.   The light emitting module includes a light emitting element and light emitted from the light emitting element. The antenna device according to claim 1, further comprising: the light guide portion that guides the light to the light transmission portion of the case. A light-emitting module, the light emitting module includes a light emitting element and the light guide portion for guiding the light the light emitting element is emitted to the light transmissive portion of the outer case, the antenna device according to claim 4.   The antenna device according to claim 2, wherein the additional unit is a light guide unit.   The light emitting module includes a light emitting element and light emitted from the light emitting element. 11. The antenna device according to claim 10, further comprising: the light guide unit that guides the light to the light transmission unit of the outer case. Place The antenna device according to any one of claims 8, 9, and 11, wherein the light emitting module has a power supply terminal portion electrically connected to the antenna substrate. A waterproof plug attached to the opening, the waterproof plug a through and a additional unit including a cable extending from the outside to the inside of the case, the antenna device according to any one of claims 1 to 12 .. The opening is provided with a plurality of antenna device according to any one of claims 1 to 13.

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